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Computed tomography colonography compared with conventional colonoscopy for the detection of colorectal polyps
Validación de la colonoscopia virtual frente a la colonoscopia convencional para el diagnóstico de pólipos y tumores colorrectales
María Chaparro Sáncheza,
Corresponding author
mariachs2005@gmail.com

Correspondence: Dra. M. Chaparro Sánchez. Americio, 17, PE, 2.° C. 28029 Madrid. Spain.
, Lourdes del Campo Valb, José Maté Jiméneza, José Cantero Peronaa, Antonio Barbosab, Sam Khorramia, Ricardo Moreno-Oteroa, Javier P. Gisberta
a Department of Gastroenterology and Hepatology. University Hospital La Princesa. Madrid. Spain
b Department of Radiology. University Hospital La Princesa. Madrid. Spain
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        "titulo" => "Abstract"
        "resumen" => "<span class="elsevierStyleSectionTitle">Objective</span><p class="elsevierStyleSimplePara elsevierViewall">To determine the diagnostic accuracy of computed tomography colonography &#40;CTC&#41; compared with conventional colonoscopy &#40;CC&#41;&#46;</p> <span class="elsevierStyleSectionTitle">Methods</span><p class="elsevierStyleSimplePara elsevierViewall">Patients with an indication of CC were included&#46; Fifty patients underwent CTC using multidetector CT before diagnostic colonoscopy was performed by an expert colonoscopist&#46; Diagnostic accuracy was assessed individually both for each polyp and for each patient&#46;</p> <span class="elsevierStyleSectionTitle">Results</span><p class="elsevierStyleSimplePara elsevierViewall">Fifty patients were included and 40 polyps were analyzed&#46; The by-polyp sensitivity of CTC was 15&#37; for polyps 5<span class="elsevierStyleHsp" style=""></span>mm or less&#44; 75&#37; for polyps 5-10<span class="elsevierStyleHsp" style=""></span>mm and 75&#37; for polyps 10<span class="elsevierStyleHsp" style=""></span>mm or larger&#46; By-patient specificity was 6&#37; for polyps 5 mm or less&#44; 75&#37; for polyps 5-10<span class="elsevierStyleHsp" style=""></span>mm and 80&#37; for polyps 10<span class="elsevierStyleHsp" style=""></span>mm or larger&#46; The specificity of CTC was 94&#37;&#46; CTC was preferred over CC by 90&#37; of the patients&#46; The mean colonoscopy examination time was 30 minutes for CC and 35 minutes for CTC &#40;p<span class="elsevierStyleHsp" style=""></span>&#60;<span class="elsevierStyleHsp" style=""></span>0&#46;05&#41;&#46;</p> <span class="elsevierStyleSectionTitle">Conclusions</span><p class="elsevierStyleSimplePara elsevierViewall">The sensitivity of CTC is moderate in detecting polyps larger than 10 mm&#44; low in detecting 5-10 mm polyps and very low in detecting those less than 5 mm&#46; The overall specificity of the procedure was 94&#37;&#46; Procedure time was lower with CC than with CTC but the latter was better tolerated by most patients&#46;</p>"
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      "es" => array:1 [
        "resumen" => "<span class="elsevierStyleSectionTitle">Objetivo</span><p class="elsevierStyleSimplePara elsevierViewall">Determinar la exactitud diagn&#243;stica de la colonoscopia virtual &#40;CV&#41; comparada con la colonoscopia convencional &#40;CC&#41;&#46;</p> <span class="elsevierStyleSectionTitle">M&#233;todos</span><p class="elsevierStyleSimplePara elsevierViewall">Se incluyeron pacientes con indicaci&#243;n de CC&#46; Se les realiz&#243; una CV y&#44; posteriormente&#44; se llev&#243; a cabo la CC sin sedaci&#243;n por parte de un colonoscopista experto&#46; El an&#225;lisis del rendimiento diagn&#243;stico se efectu&#243; tanto individualmente para cada p&#243;lipo como por paciente&#46;</p> <span class="elsevierStyleSectionTitle">Resultados</span><p class="elsevierStyleSimplePara elsevierViewall">Se han incluido 50 pacientes&#44; y se contabiliz&#243; un total de 40 p&#243;lipos&#46; La CV tuvo una sensibilidad del 15&#37; para p&#243;lipos menores de 5<span class="elsevierStyleHsp" style=""></span>mm&#44; aument&#243; hasta el 75&#37; para p&#243;lipos de entre 5 y 10<span class="elsevierStyleHsp" style=""></span>mm&#44; y fue del 75&#37; para los mayores de 10<span class="elsevierStyleHsp" style=""></span>mm&#46; La sensibilidad respecto al diagn&#243;stico de pacientes con lesiones fue del 6&#37; para p&#243;lipos menores de 5<span class="elsevierStyleHsp" style=""></span>mm&#44; del 75&#37; para p&#243;lipos de 5-10<span class="elsevierStyleHsp" style=""></span>mm y del 80&#37; para los mayores de 10 mm&#46; La especificidad de la colonoscopia virtual fue del 94&#37;&#46; La CV fue la exploraci&#243;n preferida por el 90&#37; de los pacientes&#46; La duraci&#243;n media de la CC fue de 30<span class="elsevierStyleHsp" style=""></span>min&#44; mientras que la de la CV fue de 35<span class="elsevierStyleHsp" style=""></span>min &#40;p<span class="elsevierStyleHsp" style=""></span>&#60;<span class="elsevierStyleHsp" style=""></span>0&#44;05&#41;&#46;</p> <span class="elsevierStyleSectionTitle">Conclusiones</span><p class="elsevierStyleSimplePara elsevierViewall">La CV es una t&#233;cnica moderadamente sensible para la detecci&#243;n de p&#243;lipos mayores de 10 mm&#59; dicha sensibilidad desciende considerablemente en los p&#243;lipos de 5-10<span class="elsevierStyleHsp" style=""></span>mm y es muy baja para los menores 5<span class="elsevierStyleHsp" style=""></span>mm&#46; La especificidad global de la prueba ha sido del 94&#37;&#46; La duraci&#243;n de la CC fue menor que la de la CV&#44; y esta &#250;ltima fue mejor tolerada por la mayor&#237;a de los pacientes&#46;</p>"
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